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Fri, 17 Feb 2023 05:27:00 +0000 Date: Fri, 17 Feb 2023 13:26:53 +0800 From: kernel test robot To: Muhammad Sammar Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev, linux-kernel@vger.kernel.org, Saeed Mahameed Subject: drivers/net/ethernet/mellanox/mlx5/core/steering/dr_ste_v0.c:1170:1: warning: stack frame size (1168) exceeds limit (1024) in 'dr_ste_v0_build_eth_ipv6_l3_l4_tag' Message-ID: <202302171359.vvB4yivq-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 3ac88fa4605ec98e545fb3ad0154f575fda2de5f commit: 7766c9b922febe18b4eb124eb731dd9a1ec71373 net/mlx5: DR, Add missing reserved fields to dr_match_param date: 1 year, 2 months ago config: powerpc-allyesconfig (https://download.01.org/0day-ci/archive/20230217/202302171359.vvB4yivq-lkp@intel.com/config) compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project db89896bbbd2251fff457699635acbbedeead27f) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # install powerpc cross compiling tool for clang build # apt-get install binutils-powerpc-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7766c9b922febe18b4eb124eb731dd9a1ec71373 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 7766c9b922febe18b4eb124eb731dd9a1ec71373 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=powerpc olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=powerpc SHELL=/bin/bash drivers/net/ethernet/mellanox/ drivers/platform/ drivers/staging/ If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot | Link: https://lore.kernel.org/oe-kbuild-all/202302171359.vvB4yivq-lkp@intel.com/ All warnings (new ones prefixed by >>): >> drivers/net/ethernet/mellanox/mlx5/core/steering/dr_ste_v0.c:1170:1: warning: stack frame size (1168) exceeds limit (1024) in 'dr_ste_v0_build_eth_ipv6_l3_l4_tag' [-Wframe-larger-than] dr_ste_v0_build_eth_ipv6_l3_l4_tag(struct mlx5dr_match_param *value, ^ 56/1168 (4.79%) spills, 1112/1168 (95.21%) variables 1 warning generated. vim +/dr_ste_v0_build_eth_ipv6_l3_l4_tag +1170 drivers/net/ethernet/mellanox/mlx5/core/steering/dr_ste_v0.c d65e841de80375 Yevgeny Kliteynik 2020-11-19 1168 d65e841de80375 Yevgeny Kliteynik 2020-11-19 1169 static int d65e841de80375 Yevgeny Kliteynik 2020-11-19 @1170 dr_ste_v0_build_eth_ipv6_l3_l4_tag(struct mlx5dr_match_param *value, d65e841de80375 Yevgeny Kliteynik 2020-11-19 1171 struct mlx5dr_ste_build *sb, d65e841de80375 Yevgeny Kliteynik 2020-11-19 1172 u8 *tag) d65e841de80375 Yevgeny Kliteynik 2020-11-19 1173 { d65e841de80375 Yevgeny Kliteynik 2020-11-19 1174 struct mlx5dr_match_spec *spec = sb->inner ? &value->inner : &value->outer; 0733535d59e154 Yevgeny Kliteynik 2021-07-04 1175 struct mlx5dr_match_misc *misc = &value->misc; d65e841de80375 Yevgeny Kliteynik 2020-11-19 1176 d65e841de80375 Yevgeny Kliteynik 2020-11-19 1177 DR_STE_SET_TAG(eth_l4, tag, dst_port, spec, tcp_dport); d65e841de80375 Yevgeny Kliteynik 2020-11-19 1178 DR_STE_SET_TAG(eth_l4, tag, src_port, spec, tcp_sport); d65e841de80375 Yevgeny Kliteynik 2020-11-19 1179 DR_STE_SET_TAG(eth_l4, tag, dst_port, spec, udp_dport); d65e841de80375 Yevgeny Kliteynik 2020-11-19 1180 DR_STE_SET_TAG(eth_l4, tag, src_port, spec, udp_sport); d65e841de80375 Yevgeny Kliteynik 2020-11-19 1181 DR_STE_SET_TAG(eth_l4, tag, protocol, spec, ip_protocol); d65e841de80375 Yevgeny Kliteynik 2020-11-19 1182 DR_STE_SET_TAG(eth_l4, tag, fragmented, spec, frag); d65e841de80375 Yevgeny Kliteynik 2020-11-19 1183 DR_STE_SET_TAG(eth_l4, tag, dscp, spec, ip_dscp); d65e841de80375 Yevgeny Kliteynik 2020-11-19 1184 DR_STE_SET_TAG(eth_l4, tag, ecn, spec, ip_ecn); d65e841de80375 Yevgeny Kliteynik 2020-11-19 1185 DR_STE_SET_TAG(eth_l4, tag, ipv6_hop_limit, spec, ttl_hoplimit); d65e841de80375 Yevgeny Kliteynik 2020-11-19 1186 0733535d59e154 Yevgeny Kliteynik 2021-07-04 1187 if (sb->inner) 0733535d59e154 Yevgeny Kliteynik 2021-07-04 1188 DR_STE_SET_TAG(eth_l4, tag, flow_label, misc, inner_ipv6_flow_label); 0733535d59e154 Yevgeny Kliteynik 2021-07-04 1189 else 0733535d59e154 Yevgeny Kliteynik 2021-07-04 1190 DR_STE_SET_TAG(eth_l4, tag, flow_label, misc, outer_ipv6_flow_label); 0733535d59e154 Yevgeny Kliteynik 2021-07-04 1191 d65e841de80375 Yevgeny Kliteynik 2020-11-19 1192 if (spec->tcp_flags) { d65e841de80375 Yevgeny Kliteynik 2020-11-19 1193 DR_STE_SET_TCP_FLAGS(eth_l4, tag, spec); d65e841de80375 Yevgeny Kliteynik 2020-11-19 1194 spec->tcp_flags = 0; d65e841de80375 Yevgeny Kliteynik 2020-11-19 1195 } d65e841de80375 Yevgeny Kliteynik 2020-11-19 1196 d65e841de80375 Yevgeny Kliteynik 2020-11-19 1197 return 0; d65e841de80375 Yevgeny Kliteynik 2020-11-19 1198 } d65e841de80375 Yevgeny Kliteynik 2020-11-19 1199 :::::: The code at line 1170 was first introduced by commit :::::: d65e841de80375372f9842ed71756d3b90d96dc4 net/mlx5: DR, Move HW STEv0 match logic to a separate file :::::: TO: Yevgeny Kliteynik :::::: CC: Saeed Mahameed -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests